Convert remaining hypervisors to plugin model
Convert BareMetal, OpenVZ, PowerVM hnd libvirt ypervisor configurations
in Nova to the new plugin setup.
Change-Id: I47d744a2c9fdda0771f5b473ec3b26fb099f7439
diff --git a/lib/nova_plugins/hypervisor-libvirt b/lib/nova_plugins/hypervisor-libvirt
new file mode 100644
index 0000000..caf0296
--- /dev/null
+++ b/lib/nova_plugins/hypervisor-libvirt
@@ -0,0 +1,165 @@
+# lib/nova_plugins/hypervisor-libvirt
+# Configure the libvirt hypervisor
+
+# Enable with:
+# VIRT_DRIVER=libvirt
+
+# Dependencies:
+# ``functions`` file
+# ``nova`` configuration
+
+# install_nova_hypervisor - install any external requirements
+# configure_nova_hypervisor - make configuration changes, including those to other services
+# start_nova_hypervisor - start any external services
+# stop_nova_hypervisor - stop any external services
+# cleanup_nova_hypervisor - remove transient data and cache
+
+# Save trace setting
+MY_XTRACE=$(set +o | grep xtrace)
+set +o xtrace
+
+
+# Defaults
+# --------
+
+
+# Entry Points
+# ------------
+
+# clean_nova_hypervisor - Clean up an installation
+function cleanup_nova_hypervisor() {
+ # This function intentionally left blank
+ :
+}
+
+# configure_nova_hypervisor - Set config files, create data dirs, etc
+function configure_nova_hypervisor() {
+ if is_service_enabled neutron && is_neutron_ovs_base_plugin && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF; then
+ # Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces
+ cat <<EOF | sudo tee -a $QEMU_CONF
+cgroup_device_acl = [
+ "/dev/null", "/dev/full", "/dev/zero",
+ "/dev/random", "/dev/urandom",
+ "/dev/ptmx", "/dev/kvm", "/dev/kqemu",
+ "/dev/rtc", "/dev/hpet","/dev/net/tun",
+]
+EOF
+ fi
+
+ if is_ubuntu; then
+ LIBVIRT_DAEMON=libvirt-bin
+ else
+ LIBVIRT_DAEMON=libvirtd
+ fi
+
+ if is_fedora || is_suse; then
+ if is_fedora && [[ $DISTRO =~ (rhel6) || "$os_RELEASE" -le "17" ]]; then
+ sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
+[libvirt Management Access]
+Identity=unix-group:$LIBVIRT_GROUP
+Action=org.libvirt.unix.manage
+ResultAny=yes
+ResultInactive=yes
+ResultActive=yes
+EOF"
+ elif is_suse && [[ $os_RELEASE = 12.2 || "$os_VENDOR" = "SUSE LINUX" ]]; then
+ # openSUSE < 12.3 or SLE
+ # Work around the fact that polkit-default-privs overrules pklas
+ # with 'unix-group:$group'.
+ sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
+[libvirt Management Access]
+Identity=unix-user:$USER
+Action=org.libvirt.unix.manage
+ResultAny=yes
+ResultInactive=yes
+ResultActive=yes
+EOF"
+ else
+ # Starting with fedora 18 and opensuse-12.3 enable stack-user to
+ # virsh -c qemu:///system by creating a policy-kit rule for
+ # stack-user using the new Javascript syntax
+ rules_dir=/etc/polkit-1/rules.d
+ sudo mkdir -p $rules_dir
+ sudo bash -c "cat <<EOF > $rules_dir/50-libvirt-$STACK_USER.rules
+polkit.addRule(function(action, subject) {
+ if (action.id == 'org.libvirt.unix.manage' &&
+ subject.user == '"$STACK_USER"') {
+ return polkit.Result.YES;
+ }
+});
+EOF"
+ unset rules_dir
+ fi
+ fi
+
+ # The user that nova runs as needs to be member of **libvirtd** group otherwise
+ # nova-compute will be unable to use libvirt.
+ if ! getent group $LIBVIRT_GROUP >/dev/null; then
+ sudo groupadd $LIBVIRT_GROUP
+ fi
+ add_user_to_group $STACK_USER $LIBVIRT_GROUP
+
+ # libvirt detects various settings on startup, as we potentially changed
+ # the system configuration (modules, filesystems), we need to restart
+ # libvirt to detect those changes.
+ restart_service $LIBVIRT_DAEMON
+
+ iniset $NOVA_CONF DEFAULT libvirt_type "$LIBVIRT_TYPE"
+ iniset $NOVA_CONF DEFAULT libvirt_cpu_mode "none"
+ iniset $NOVA_CONF DEFAULT use_usb_tablet "False"
+ iniset $NOVA_CONF DEFAULT compute_driver "libvirt.LibvirtDriver"
+ LIBVIRT_FIREWALL_DRIVER=${LIBVIRT_FIREWALL_DRIVER:-"nova.virt.libvirt.firewall.IptablesFirewallDriver"}
+ iniset $NOVA_CONF DEFAULT firewall_driver "$LIBVIRT_FIREWALL_DRIVER"
+ # Power architecture currently does not support graphical consoles.
+ if is_arch "ppc64"; then
+ iniset $NOVA_CONF DEFAULT vnc_enabled "false"
+ fi
+}
+
+# install_nova_hypervisor() - Install external components
+function install_nova_hypervisor() {
+ if is_ubuntu; then
+ install_package kvm
+ install_package libvirt-bin
+ install_package python-libvirt
+ elif is_fedora || is_suse; then
+ install_package kvm
+ install_package libvirt
+ install_package libvirt-python
+ fi
+
+ # Install and configure **LXC** if specified. LXC is another approach to
+ # splitting a system into many smaller parts. LXC uses cgroups and chroot
+ # to simulate multiple systems.
+ if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
+ if is_ubuntu; then
+ if [[ "$DISTRO" > natty ]]; then
+ install_package cgroup-lite
+ fi
+ else
+ ### FIXME(dtroyer): figure this out
+ echo "RPM-based cgroup not implemented yet"
+ yum_install libcgroup-tools
+ fi
+ fi
+}
+
+# start_nova_hypervisor - Start any required external services
+function start_nova_hypervisor() {
+ # This function intentionally left blank
+ :
+}
+
+# stop_nova_hypervisor - Stop any external services
+function stop_nova_hypervisor() {
+ # This function intentionally left blank
+ :
+}
+
+
+# Restore xtrace
+$MY_XTRACE
+
+# Local variables:
+# mode: shell-script
+# End: